【作者】 李雅申；

【导师】 刘义坤；

【作者基本信息】 东北石油大学 ， 油气田开发工程， 2010， 硕士

【摘要】 1.通过分析影响卫星油田压裂效果的地质因素,结合反九点法井网压裂数值模拟结果,建立了卫星油田压裂后产量与储层压力、储层厚度和含水等关键参数关系的数学模型,筛选确定了卫星油田选井、选层的标准;2.根据卫星油田的储层特点,优选出适合卫星油田的压裂液体系配方,根据压裂液优化研究结果,推荐采用下列配方:基液:0.40%胍胶+0.07%助排剂+0.05%破乳剂SP-169+1.0%KCl,交联液:0.90%硼砂,交联比:20 :1,破胶剂:0.10%过硫酸钾。3.通过压裂数值模拟研究,根据裂缝参数对卫星油田反九点法井网条件下油井压后增油量和累积增油量的影响分析,确定最佳裂缝穿透比为应该在0.30～0.35(扶杨油层0.6～0.7),最优裂缝导流能力为30～35dc.cm。4.根据周边类似区块压裂情况,综合上述分析,研究确定了卫星油田合理的压裂方法:提出了对低压层采取高效助排等进一步降低压裂液伤害的措施,推荐了采用分段压裂工艺和葡萄花油层选用粒径为0.45～0.9mm普通石英砂作为支撑剂,扶杨油层可选用陶粒作为支撑剂。确定了10口待措施单井的压裂施工参数。5.卫星油田油井压裂后日产油量呈指数递减变化规律,根据10口井压裂生产数据建立了油井压裂增产措施的指标预测模型,并以W2-18-14井为例,进行了产量、含水变化规律的预测。6.经济评价结果,卫星油田压裂措施是可行的。更多还原

【Abstract】 1. By analyzing the geological factors which impact the fracturing effect of nearby field, combined with the fracturing simulation results of inverted nine spot pattern, the mathematical models of the relationships among some key parameters such as production and reservoir pressure after fracturing, production and reservoir thickness and water content of nearby field were established, the standards of well selection, selection-layer of nearby field were determined by screening.2. Based on the characteristics of nearby field, the formula of fracturing fluid system were optimized, according to results of optimization of the fracturing fluid, the following formula is recommended: base fluid: 0.40% Gua Gum +0.07% cleanup additive +0.05% demulsifier SP-169 +1.0% KCl, crosslinked fluid: 0.90% borax, crosslinked ratio: 20: 1, breaker: 0.10% potassium persulfate.3. Through the study on fracturing simulation, based on the analysis of influence that fracture parameters on oil increment and cumulative oil increment after fracturing in the situation of inverted nine spot pattern of nearby field, to determine the optimum fracture penetration ratio should be 0.30 ~ 0.35 (Fuyang reservoir 0.6 ~ 0.7), the optimum fracture conductivity is 30 ~ 35dc.cm.4. According to the fracturing circumstances of surrounding similar block, integrate with the above analysis, the reasonable fracturing approach of nearby field was determined, some measures which can further reduce the injury of fracturing fluid were proposed, such as efficient cleanup for weak zone, recommended to make use of staged fracturing technology and the particle size of Putaohua reservoir is 0.45 ~ 0.9mm, ordinary quartz sand as a proppant and for Fuyang reservoir, ceramsite is proppant. Identified the fracturing parameters of ten single wells to be measured.5. The barels oil per day of nearby field after fracturing presented exponential decline regular, according to the fracturing production data of 10 wells, established the indicators prediction model of fracturing stimulation measures for oil well, and taked well W2-18-14 as example, to forecast the yield, water content changes regular.6. Economic evaluation results, the fracturing measures of nearby field are feasible.更多还原